US680280A - Blowing-fan. - Google Patents

Description

No. 680,280. Patented Aug. l3, I90l. n. ROESSEB.

BLOWING FAN.

' (Application filed Sept. 9, 1599.:

(No Model.) 2 Sheets-Sheet I.

FIGE.

No. 680,280. I 'Patented'Aug. I3, I90]. R. masses. BLOWING FAN.

(Application filed Sept. 9, 1899.} (No Model.)

2 Sheets-Sheet 2.

UNITED STATES PATENT .Qrrron.

RUDOLF ROESSER, OF VIENNA, AUSTRIA-HUN GARY, ASSIGNOR TO ORKAN LUFTTROCKNUNGSAPPARAT ACTIEN GESELLSOI-IAFT, OF SAME PLACE.

BLOWlNG FAN.

SFECIFIGATION formingpart of Letters Patent No. 680,280, dated August 13, 1901. Application filed September 9, 1899. Serial No. 729,899. (No model.)

To all whom it may concern:

Be it known that I, RUDOLF ROESSER, a citizen of the Empire of Austria-Hungary, residing at Vienna, in the Province of Lower Austria, in the Empire of Austria-Hungary, have invented certain new and useful Improvements in Blowing-Fans, of which the following is a specification.

The object of the invention is to provide a strong, durable, and efiicient blowing-fan especially for use in drying-rooms, so that the current of heated air may be readily directed to all parts of the room in which the drying is taking place.

The invention consists of a blowing -fan comprising a stationary casin g provided with a front opening, a fan in said casing, means for imparting continuous rotary motion to the fan, a discharge-nozzle provided with a regulating portion guided and rotatably movable on the open portion of the stationary casing, and means for oscillating the discharge-nozzle simultaneously with the continuous rotation of the fan, as hereinafter particularly described in detail and then claimed. I

In the accompanying drawings, Figure 1 is a vertical transverse section of my improved blowing-fan. Fig. 2 is a front elevation thereof, partly in section. tion of the same. Fig. 4 is an illustration of a modification of the blowing-fan. Fig. 5 is a side view showing a modified form of drivinggear for the movable portion or dischargenozzle which forms a part of the fan-casing, and Figs. 6 and 7 are sectional detail views showing the bearings preferably employed.

Referring to the accompanying drawings, Figs. 1, 2, and 3, 1) indicates the fan-casing, which is stationary, and Z7 indicates the m ovable or shiftable discharge-nozzle, which is provided with a regulating portion 19 which corresponds in shape with and is guided and rotatably movable on the portion of the casing b surrounding the opening or aperture 6 5 therein. The casing 12 rests in the bearin gs cl or is fixed to suitable brackets, or it is made stationaryin any suitable manner. The regulating portion 1) of the discharge-nozzle b is concentric with and fits closely onto the outer surface of the stationary casing b. The opening or aperture 6 is made of such size as that Fig. 3 is an end elevawhen the regulating portion Z) of the nozzle turns on the casing the cross-area of the opening through the discharge-nozzle is in no wise reduced or covered up.

A vertical or horizontal position may be given to the blowing-fans, as this is of no consequence, nor does it matter what form of device is used for creating the air-current, whether an ordinary fan a, as shown in Figs. 1, 2, and 3, or a ventilator or exhauster s, as shown in Fig. 4. It is evident also that the discharge portion may be provided with two or more nozzles 12 and that the regulating portion of the nozzle may move in instead of upon a fixed casing 0 as illustrated in Fig. 4. The movable discharge-nozzle may be operated by a suitable eccentric h and connectingrod g, as shown in Fig. 4, or by other suitable means or by the form of device hereinafter described and especially intended for operating several blowing-fans simultaneously. In stead of a connecting-rod, such as g, a cord, rope, or chain 25 may be used and secured at one end to the driving crank-pulley h, Fig. 7 5, and at the other end to the upper part of the discharge-nozzle b such cord, rope, or chain passing over a suitable pulley or pulleys 2'. In case several fans are to be operated simultaneously the cord or rope t is divided into as many branches as there are fans, so that upon revolving the crank-pulley h the discharge-nozzles b of all the fans of a set will be shifted synchronously.

In order to permit the adjustment of the extent of the stroke of the discharge-nozzle, an adjustable attachment or slide it, (shown in Fig. 5,) for holding the end of the rod or cord 25 in connection with the crank-pulley h, may be shiftable radially on one of the spokes of the latter, and for the purpose of allowing the mean direction of the air-current to be altered the rope or cord 75 may be connected with the discharge-nozzle by means of a short chain 1;, adapted to be engaged with a hook 5 on said nozzle, so that by lengthening or shortening the same the mean position of the discharge-nozzle may be adjusted, and in case of several fans being operated in a set the aircurrents of the various fans may thus be dis- IOC tributed at different levels.

For the purpose of obviating the necessity of taking apartthe whole apparatus in case the fan-shaft c is to be removed the stationary casing b is made in two parts, Fig. 1, which can be securely connected by suitable angleirons and screw-bolts.

The trunnions I) support the fan-casing in the fan-shaft d, and through these trunnions the fan-shaft c freely passes, such trunnions being provided with radial slits or grooves 10, corresponding in width with the diameter of the bore, so that the fan-shaft 0 can be passed laterally into such slits in order to be placed in its bearings. If the fan-shaft c is tobe taken out, it is therefore only necessary to remove the upper portion ofthe stationary casing b after removing the upper halves of the bearings, and then the shaft 0, with its fan, can be freely lifted out of its bearings through the slits or grooves 10.

If the stationary casing 19 is to be supported in the bearings, the latter must have three bores, as shown in Figs. 6 and 7. The bore d corresponds with the diameter of the fanshaft 0 and bore (1 corresponds to the external diameter of the trunnions or necks b of the stationary basing, while the bores 01 correspond with the bearing sockets or necks b of the movable discharge-nozzle. The trunnions b and necks 19 must be made suffi- -ciently large to give some play to the shaft 0 and necks b respectively, and to admit, therefore, of as little friction as possible. The trunnions b and necks or sockets b are also provided with radial slits or grooves w w, corresponding in'width to the diameter of their bores, in order to admit readily of unmonntingand removing thefan-shaft Without taking the whole apparatus apart.

The advantages of my invention are that the casing which incloses the fanis stationary, so that the bearings for the fan-shaft are not weakened by the turning of the casing, as well as by the turning of the fan-shaft, and thus the friction at the bearing-points is reduced.

Another advantage is that in the present invention a movable discharge-nozzle is used which has a regulating portion concentric with and movable on the open portion of the stationary casing, so that the said nozzle may be operated with the least expenditure of power and with a minimum of friction.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is--* The combinationof a stationary casing provided with an opening or aperture,'a rotary fan in said casing, means for imparting contin nous rotary motionto said fan, a discharge= nozzle provided with a regulating portion concentric with and guidedand rotatably movable on the apertured or open portion of the casing, and means for oscillating the nozzle simultaneously with the continuous rotation of the fan, substantially as set forth.

In witness whereof I have hereunto set my hand in presence of two witnesses.

RUDOLF 'ROESSER.

Witnesses:

WILHELM BERGER, ALVESTO S. HOGUE.

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